scholarly journals Tensile Performance Analysis of Ultra-Rapid-Hardening Fiber-Reinforced Concrete Based on Cement Kiln Dust Content

2020 ◽  
Vol 20 (5) ◽  
pp. 217-223
Author(s):  
Booki Chun ◽  
Wonsik Shin ◽  
Yun Sik Jang ◽  
Doo-Yeol Yoo
Keyword(s):  
Reinforced Concrete ◽  
Silica Fume ◽  
Fiber Reinforced Concrete ◽  
Limestone Powder ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Fiber Reinforced ◽  
Rapid Hardening ◽  
Tensile Performance ◽  
Kiln Dust

In this study, the effects of cement kiln dust and silica fume on the tensile performance of fiber-reinforced concrete mixtures comprising special materials and polyethylene fiber for the reinforcement of facilities were analyzed. For the purpose of repair, ultra-rapid-hardening cement with high C3A content was employed, and the cement was replaced with supplementary cementitious materials such as granulated ground blast furnace slag, limestone powder, cement kiln dust, and silica fume. Cement kiln dust was incorporated at 10%, 15%, 20%, 30%, 40%, and 50% weight of cement, and silica fume was incorporated at 20% and 40% weight of cement. Four hours after specimen fabrication, a direct tensile test was conducted. The obtained experimental results indicate that the tensile performance (including tensile strength, strain capacity, and energy dissipation capacity) is found to be significantly high when the content of silica fume is 20% and that of cement kiln dust is 15%.

scholarly journals Behavior of self-compacting fiber reinforced concrete containing cement kiln dust

2014 ◽  
Vol 53 (2) ◽  
pp. 341-354 ◽  
Author(s):  
Mohamed I. Abukhashaba ◽  
Mostafa A. Mostafa ◽  
Ihab A. Adam
Keyword(s):  
Reinforced Concrete ◽  
Fiber Reinforced Concrete ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Fiber Reinforced ◽  
Kiln Dust

The impacts of nano-SiO2 and silica fume on cement kiln dust treated soil as a sustainable cement-free stabilizer

2021 ◽  
Vol 285 ◽  
pp. 122918
Author(s):  
Sadegh Ghavami ◽  
Hamed Naseri ◽  
Hamid Jahanbakhsh ◽  
Fereidoon Moghadas Nejad
Keyword(s):  
Silica Fume ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Treated Soil ◽  
Nano Sio2 ◽  
Kiln Dust

scholarly journals Development of UHPC Mixtures Utilizing Natural and Industrial Waste Materials as Partial Replacements of Silica Fume and Sand

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Shamsad Ahmad ◽  
Ibrahim Hakeem ◽  
Mohammed Maslehuddin
Keyword(s):  
Silica Fume ◽  
Industrial Waste ◽  
Steel Slag ◽  
Limestone Powder ◽  
Waste Materials ◽  
Cement Kiln ◽  
Test Results ◽  
Strength Criteria ◽  
Natural Pozzolana ◽  
Kiln Dust

In the exploratory study presented in this paper, an attempt was made to develop different mixtures of ultrahigh performance concrete (UHPC) using various locally available natural and industrial waste materials as partial replacements of silica fume and sand. Materials such as natural pozzolana (NP), fly ash (FA), limestone powder (LSP), cement kiln dust (CKD), and pulverized steel slag (PSS), all of which are abundantly available in Saudi Arabia at little or no cost, were employed in the development of the UHPC mixtures. A base mixture of UHPC without replacement of silica fume or sand was selected and a total of 24 trial mixtures of UHPC were prepared using different percentages of NP, FA, LSP, CKD, and PSS, partially replacing the silica fume and sand. Flow and 28-d compressive strength of each UHPC mixture were determined to finally select those mixtures, which satisfied the minimum flow and strength criteria of UHPC. The test results showed that the utilization of NP, FA, LSP, CKD, and PSS in production of UHPC is possible with acceptable flow and strength. A total of 10 UHPC mixtures were identified with flow and strength equal to or more than the minimum required.

scholarly journals Evaluating the Durability of Green Cement Mortar Using Ultrasonic Pulse Velocity

2021 ◽  
Vol 877 (1) ◽  
pp. 012049
Author(s):  
Ali Abdulridha ◽  
Saif S. AlQuzweeni ◽  
Rasha S. AlKizwini ◽  
Zahra A. Saleh ◽  
K. S. Hashem
Keyword(s):  
Silica Fume ◽  
Cement Mortar ◽  
Experimental Studies ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Negative Consequences ◽  
Kiln Dust

Abstract Various experimental studies have highlighted the negative consequences of Portland cement on health and the environment, such as toxic emissions and alkaline sewage. The development of environmentally acceptable substitutes for cement is thus one of the objectives of current investigations. The proposed environmental alternatives to cement, nevertheless, might have detrimental impacts on the concrete’s characteristics. This investigation intends to study the suitability as alternatives to cement in cement mortar, using industrial wastes like silica fume and cement kiln dust. As a replacement for cement, the cement mortars developed in this research continue from 0% to 60% silica fume and cement kiln dust. Ultrasonic pulse velocity tests at 1 to 4 weeks of age were conducted on hardened specimens. The findings showed that a low reduction in the pulse velocity resulted from high proportions of silica fume and cement kiln dust replacements, whereas an improvement in the characteristics of the mortars with low replacement ratios. Using low kiln dust and silica fume of 20 to 40%, the durability of mortars may increase.

Utilization of Portland cement with limestone powder and cement kiln dust for stabilization/solidification of oil-contaminated marl soil

2020 ◽  
Vol 28 (3) ◽  
pp. 3196-3216
Author(s):  
Yassir M. H. Mustafa ◽  
Omar S. Baghabra Al-Amoudi ◽  
Shamsad Ahmad ◽  
Mohammed Maslehuddin ◽  
Muhammad H. Al-Malack
Keyword(s):  
Portland Cement ◽  
Limestone Powder ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Kiln Dust

scholarly journals Performance Comparison between Densified and Undensified Silica Fume in Ultra-High Performance Fiber-Reinforced Concrete

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3901 ◽  
Author(s):  
Sung-Hoon Kang ◽  
Sung-Gul Hong ◽  
Juhyuk Moon
Keyword(s):  
Reinforced Concrete ◽  
Silica Fume ◽  
High Performance ◽  
High Strength ◽  
Performance Comparison ◽  
Fiber Reinforced Concrete ◽  
Hydration Reaction ◽  
Fiber Reinforced ◽  
Dust Generation ◽  
High Performance Fiber

Silica fume (SF) is a key ingredient in the production of ultra-high performance fiber-reinforced concrete (UHPFRC). The use of undensified SF may have an advantage in the dispersion efficiency inside cement-based materials, but it also carries a practical burden such as high material costs and fine dust generation in the workplace. This study reports that a high strength of 200 MPa can be achieved by using densified SF in UHPFRC with Portland limestone cement. Additionally, it was experimentally confirmed that there was no difference between densified and undensified SFs in terms of workability, compressive and flexural tensile strengths, and hydration reaction of the concrete, regardless of heat treatment, because of a unique mix proportion as well as mixing method for dispersing agglomerated SF particles. It was experimentally validated that the densified SF can be used for both precast and field casting UHPFRCs with economic and practical benefits and without negative effects on the material performance of the UHPFRC.

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